The s4 head includes an independent pan lock which allows you to pan smoothly without having to turn the entire monopod other features include tilt lock 501pl compatible qr6 plate tilt drag and illuminated bubble level each benro video monopod kit is based on an eighth generation design of single leg tubes and the option of flip lever or twist leg lock mechanisms carrying case included built in bubble level includes a qr plate interchangeable pan bar handle tilt lock lever pan loc